Physics

Problem

25.0\,\text{g}

sample of aluminum (

c = 0.90\,\text{J g}^{-1}\,^{\circ}\text{C}^{-1}

) is warmed from

22.0^{\circ}\text{C}

55.0^{\circ}\text{C}

. What is the magnitude of the energy absorbed by the aluminum? a)

-7.4\times10^{2}\,\text{J}

3.4\times10^{3}\,\text{J}

7.4\times10^{2}\,\text{J}

1.2\times10^{3}\,\text{J}